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Century Semiconductor Inc. GENERAL DESCRIPTION CS8552 provides full conversion from digital video format YCbCr into NTSC/PAL composite and Svideo. It can be used in VCD, DVD, digital VCR application. Two-times oversampling reduces the output filter requirements and guarantees no alias interference by internal UV filters and Y filter. Two 9-bit DACs provides two channels for a Svideo output port or two composite video outputs with high quality of image. 32-pin package and pin assignment make CS8552 compatible with major vendors. FEATURES CS8552 TV Encoder BLOCK DIAGRAM HOL CONTROLLER SERIAL TO 4:2:2 to 4:4:4 PARALLEL INTERPOLATION VBIAS VREF_O H, V-SYNC VIDEO-TIMING PL SUB-CARRIER GENERATION SINE-TABLE u-FILTER v-FILTER COLOR-BURST & MODULATION & MIXER CVBS/Y CVBS/C y-FILTER DACMAPPING FSADJUST COMP CLK_27 SLEEP P[7:0] MODE[3:0] SVIDEO MASTER CBSWAP Century Semiconductor, Inc. Taiwan: No. 2, Industry East Rd. 3rd, Science-Based Industrial Park, Hsin-Chu, Taiwan Tel: 886-3-5784866 Fax: 886-3-5784349 3U QD * Designed special for VCD, Karaoke, digital VCR, DVD, DIGITAL set-top box. * Support the following 4 modes: NTSC, PAL-M, PAL-BDGHI, PAL-Nc * 8-bit 4:2:2 YcbCr inputs for glueless interface to MPEG decoders * CVBS (composite YC) or S-video (Y and C) outputs * Support CCIR-6-1 for mat, non-square pixel * 2x oversampling simplify external filtering * 6MHz and 1.3MHz anti-alias filters for Y and U/V channels each * On-chip color bar generation * 2 channels of 9-bit DAC * Support master and slave modes * Support interlace operation only * Automatic mode detection/switching in slave mode * 3.3V supply voltage; 5V tolerant for all digital I/O pins USA: 1485 Saratoga Ave. #200 San Jose, CA, 95129 Tel: 408-973-8388 Fax: 408-973-9388 U\ Sales@century-semi.com Sales@century-semi.com.tw www.century-semi.com Rev.0.1 May 2001 page 1 of 23 Century Semiconductor Inc. PIN CONNECTION DIAGRAM CS8552 CLK_27M P7 P6 P5 P4 P3 P2 P1 22 29 28 27 26 25 24 23 21 P0 VSS VDD VSYNC HSYNC NC VSS CVBSY 30 31 32 1 2 3 4 20 19 18 17 16 15 14 MD0 MD1 MD2 MD3 CS8552 QD PL 10 12 CVBSC VDD 11 6 7 8 9 VBIAS VSS COMPI 3U HOL Figure-1 32-pin PLCC VREFO SLEEP FADJI VREFI 13 5 U\ MASTERI CBSWAPI SVIDEOI page 2 of 23 Century Semiconductor Inc. PIN DESCRIPTION Name CLKI VSYNC HSYNC P[7:0] I/O I I/O I/O I Pin 29 32 1 28-21 Description Pixel clock, 27MHz, twice the Y sample rate CS8552 Vertical sync, output in master mode or input in slave mode, is synchronized by CLK. Horizontal sync, output in master mode or input in slave mode, is synchronized by CLK too. YCbCr pixel inputs (TTL compatible). Also, synchronized by CLK with respect to the incoming HSYNC timing, the higher index corresponds to a greater significance. Configuration inputs in 0: slave mode, h and v sync are inputs. 1: master mode, h and v sync are outputs. 0: normal Cr, Cb sequence. 1: swaps Cr, Cb sequence 0: composite output same signal on both Y, C channels, 1: s-video output, Y, C channels. 1: power down, reset 0: normal operation MD[3:0] MASTER CBSWAP SVIDEO SLEEP FSADJUST COMP VREFO VREFI/VRDAC I I I I I I I I I 17-20 16 15 14 13 5 6 8 9 Full scale adjust control pin. A resistor is connected to GND. Used to control the full-scale output current on analog outputs. Compensation pin. A 0.1F capacitor is used to bypass this pin to VCC. Voltage reference output, typically 1.2V, may be used to connect to VREFI input. VBIAS CVBS/C CVBS/Y VAA VDD GND AGND NC O O O 10 11 4 3U 3, 12 2 HOL 7 Analog power 31 Digital power 30 Digital ground Analog ground No connection PL Voltage reference input, typically 1.235V. A 0.11F capacitor must be used to decouple this input to GND. DAC current switch reference input, connect to VREFO output. DAC bias voltage, 0.7 v less than COMP signal Composite output or chrominance Composite output or luminance (with blanking and sync) QD U\ page 3 of 23 Century Semiconductor Inc. FUNCTIONAL DESCRIPTION MODE configuration SeeTable 1 to Table 3 for details. master = 1: master mode CS8552 horizontal sync and vertical sync are generated from internal timing and are output at the rising edge of clk_27. md[3]: define EFIELD function 0: vsync is output pin 1: vsync is even/odd field indicator, vsync=0 even, vsync=1 odd. md[2]: define PAL625 function 0: 525 line operation is set. 1: 626 line operation is set. master = 0: slave mode Horizontal sync and vertical sync are inputs that are synchronized by clk_27. A falling edge of VSYNC* occurring within 1/4 of a scan line from the falling edge of HSYNC* cycle time indicates the beginning of Field-1. A falling edge of VSYNC* occurring within 1/4 of a scan line from the middle point of the line indicates the beginning of Field-2. See Figure 2 Field-1 md[3]: define YCSWAP 0: normal operation. 1: Swap the luma and chroma samples. md[2]: define SETUP function 0: 7.5 IRE setup is enabled for NTSC and PAL-M, with scaling for 92.5% black-to-white range, other PALs with normal 100% black-to-white range. 1: 7.5 IRE setup is disabled for NTSC and PAL-M, with scaling for 100% black-to-white range. md[1]: define PALSA function, South America. 0: Normal operation. 1: PAL-M used for Brazil 525 lines operation. PAL-Nc used for Argentina 625 lines operation. 3U HOL PL Figure-2 page 4 of 23 QD Field-2 U\ Century Semiconductor Inc. Table-1 Mode Slave Master EFIELD PAL625 YCSWAP SETUP Mode[3] YCSWAP EFIELD Mode[2] SETUP PAL625 Mode[1] PALSA RESERVED CS8552 Mode[0] RESERVED RESERVED PALSA Table-2 master 1 1 1 1 Master mode: Mode[3:0] X000 X010 X000 X010 X000 X110 X010 X110 PL 0 1 1 PAL-625 0 0 1 1 System (Normal setup) NTSC PAL-M PAL-BDGHI PAL-Nc QD PAL-625 0 EFIELD is used when configured as a master. When EFIELD is set low, the Normal vsync* signal is output on the VSYNC* pin. When EFIELD is set high, field ID information is output on the VSYNC* pin (VSYNC* low for Field-1 and high for Field-2) PAL625 is used when configured as a master. When PAL625 is set low, 525-line operation is selected. When PAL625 is set high, 625-line operation is selected. This mode is set by automatic detection when configured as a slave. YCSWAP should normally be set to zero. When configured as a slave, this bit can be set high to swap the luma and chroma samples, thus altering the pixel sequence with respect to the incoming HSYNC* timing reference. SETUP is normally low for the common video modes. The setup and scaling function is toggled when this bit is high. When SETUP is low, the 7.5IRE setup is enabled for NTSC and PAL-M with scaling amplified for a 92.5% black-to-white range; other PAL formats have setup disabled with normal 100% scaling. When SETUP is high, the 7.5 IRE setup is disabled for NTSC and PAL-M with 100% black-to-white range scaling; other PAL formats have setup enabled with amplified scaling. PALSA is normally low for the common video modes. South American video Standards can be enabled by setting this bit high. For 525-line operation, the PALSA enables PAL-M for Brazil; in 625line operation, the PALSA enables PAL-Nc for Argentina. U\ PALSA 0 1 0 1 PALSA 0 1 0 1 Fv Hz 59.94 59.94 50.00 50.00 Fh Hz 15734.26 15734.26 15625 15625 Table-3 Master 0 0 0 0 Slave mode: 3U Mode[3:0] X000 X010 X000 X010 HOL System NTSC PAL-M PAL-BDGHI PAL-Nc Fv hz 59.94 59.94 50.00 50.00 Fh Hz 15734.26 15734.26 15625 15625 page 5 of 23 Century Semiconductor Inc. CS8552 PIXEL INPUT/OUTPUT TIMING 1. clk is 2x the luminance sampling rate (13.5 MHz) or 4x the chrominance sampling rate (6.75 MHz), all signals are reference to rising edge. 2. In accordance with CCIR656, the input pixel pattern begins during the first clk period after the falling edge of HSYNC (same for master mode and slave mode). The input pattern is Cb0, Y0, Cr0, Y1, Cb2, Y2, Cr2, Y3,...... The input pin CBSWAP and md[3] (YCSWAP) could be used to swap cb, cr sequence and also y and cb, cr sequence. See Figure 3. 3. Pixel input range: See Table 4 Y: 16-235 for normal range; 0-15, 236-255 are invalid. When Y value is between 0-15 then clamp to 16, when 236 and 255 Y will be set to 255. CbCr: 16-240 for normal range with 128 mapped to 0; 0-15, 241-255 are invalid. When Cb/Cr is between 0-15 will be clamp to 16, when Cb/Cr is 241 to 255 then will be set to 240. Table-4 Y Cb Cr 75% amplitude, 100% saturated YCbCr color bars range 16-235 16-240 16-240 element White 235 128 128 Yellow 162 44 142 Cyan 131 156 44 Green 112 72 58 Magenta 84 184 198 Red 65 100 212 Blue 35 212 114 black 16 128 128 CLK HSYNC* YCSWAP=0 P[7:0]/CBSWAP=0 P[7:0]/CBSWAP=1 YCSWAP=1 P[7:0]/CBSWAP=0 P[7:0]/CBSWAP=1 PL cb0 cr0 y0 cr0 y1 cb2 cr2 y0 cb0 y1 y0 cb0 cr0 y1 cr2 y2 y2 y0 y1 cb1 QD y2 y2 cr2 cb2 y3 y3 cb4 cr4 cb2 cr2 y3 y3 cr4 cb4 y4 y4 3U HOL Figure-3 U\ page 6 of 23 Century Semiconductor Inc. VIDEO TIMING See Table 5, Table 6 CS8552 1. If master mode is selected, horizontal counter is incremented on clk/2, and reset to 1 when h-total is hit. The output hsync is 6 clk later than the internal horizontal sync. Vertical counter is incremented by every horizontal scan line and reset to 1 after v-total hit. The output vertical sync is 3 or 2.5 lines for 262/525 and 312/625 later. 2. If slave mode is selected, the horizontal counter is incremented on the rising of clk and then reset to 1 after 2 clk cycles late of falling edge of hsync. The vertical counter is incremented on the falling edge of hsync and reset to 1 at falling edge of vertical sync. If the falling edge of vertical sync occurring within [-1/4,1/4] of a scan line from the falling edge of hsync indicates the even field, if within [-1/4,1/4] of middle point of scan line indicates odd field. 3. The width of horizontal sync and the start and end of color burst is automatically calculated and inserted for each mode. 4. sync timing and burst envelopes are internally controlled. Color burst frequency is derived from the clk. Any jitter on clk may induce a color burst frequency error. 5. timing tables: Table-5 System NTSC PAL-BDK. Vertical timing table Odd-field Non-active Odd-field Active Line 1-22 VBI=7-21 Line 1-22 VBI=7-21 Line 23-262 Line 23-310 Even-field Non-active U\ Even-field Active Line 285-524 Line 336-623 Total size Active size 720*480 720*576 QD Active 711 711 702 702 Line 263-284; 525 VBI=270-284 Line 311-335; 624, 625 VBI=319-333 858*525 864*625 Table-6 System NTSC PAL-M PAL-BD.. PAL-Nc Horizontal timing table: number of 13.5 MHz cycles Front-porch 20 20 20 20 Back-porch 127(122) 127 142(132) 142 PL Burst-start 72 78 76 76 Burst-width 34 34 30 34 total 858 858 864 864 3U 6. Color burst is disabled on appropriate scan lines. Serration and equalization pulses are generated on appropriate scan lines. For NTSC, color burst information is automatically disabled on scan line 1-9 and 264272 or PAL-M, color burst information is automatically disabled on scan line 1-11 and 263-273. For PALBDGHINc, color burst information is automatically disabled on scan line 1-6 and 310-318 and 623-625 for field 1,2,5,6. However, for field 3,4,7,8 burst is disabled at scan line 1-5,311-319,622-625. See the following Figure 4, Figure 5 and Figure 6. HOL page 7 of 23 Century Semiconductor Inc. CS8552 Analog field-1 Start of vsync 525 1 2 (equalization) 3 4 (serration) burst phase 5 6 7 8 (equalization) 9 10 262 263 264 265 266 267 QD 268 269 270 5 6 7 8 268 269 270 U\ 271 272 273 3 Analog field-2 Analog field-3 525 1 2 PL 4 burst phase 266 267 9 10 Analog field-4 Burst begins with positive half-cycle Burst phase=reference phase=180 relative to B-Y Burst begins with negative half-cycle Burst phase=reference phase=180 relative to B-Y 3U 262 263 264 HOL 265 271 272 273 Figure-4 Interface 525-line (NTSC) video timing page 8 of 23 Century Semiconductor Inc. Start vsync Analog field-1 CS8552 621 622 623 624 625 1 -U phase Analog field-2 2 3 4 5 6 7 309 310 311 312 313 314 U\ 315 316 317 318 2 3 4 5 6 315 316 317 318 319 320 Analog field-3 621 622 623 624 625 1 QD 314 7 Analog field-4 309 310 311 312 PL 313 field-1 field-2 field-3 field-4 319 320 3U Burst phase=reference phase=135 relative to U; PAL switch=0, +V component Burst phase=reference phase + 90=225 relative to U; PAL switch=1, -V component Figure-5 Interface 625-line (PAL-B,D,G,H,I,N,Nc) video timing HOL page 9 of 23 Century Semiconductor Inc. Start vsync Analog field-5 CS8552 621 622 623 624 625 1 -U phase Analog field-6 2 3 4 5 6 7 309 310 311 312 313 314 U\ 315 316 317 318 2 3 4 5 6 315 316 317 318 319 320 Analog field-7 621 622 623 624 625 1 QD 314 7 309 310 311 312 PL 313 field-5 field-6 field-7 field-8 Analog field-8 319 320 3U Burst phase=reference phase = 135 relative to U; PAL switch=0, +V component Burst phase=reference phase + 90 = 225 relative to U; PAL switch=1, -V component HOL Figure-6 page 10 of 23 Century Semiconductor Inc. ANTI-ALIAS FILTERS CHARACTERIS CS8552 The Y and the U, V are up-samples to clk, 27MHz after 4:2:2 to 4:4:4 conversion. Y is filtered by a filter whose passband is 6MHz. And U, V are also filtered by passband = 1.3MHz filters. Please refer to Figure 7 to Figure 10 Db 0 -1 -2 -3 0 2 4 6 Figure-7 2X Sample Y filter frequency response/passband Db 0 -10 -20 3U -55 0 2 4 -40 HOL 6 8 10 MHz Figure-8 2X Sample Y filter frequency response/stopband page 11 of 23 PL QD U\ 8 MHz Century Semiconductor Inc. Db 0 CS8552 -1 -2 -3 0 2 4 6 Figure-9 2X U/V filter frequency response/passband Db 0 -10 -20 -40 -55 0 HOL 0.5 1 1.5 PL 2 2.5 MHz Figure-10 2X U/V filter frequency response/stopband page 12 of 23 3U QD U\ 8 MHz Century Semiconductor Inc. DAC MAPPING CS8552 Depends on the video output mode, the color bars mapping to DAC are specified in Table 7 to Table 12 and Figure 11 to Figure 16. Where white is 400. For PAL-BDGHINc blank = 120. For NTSC/PAL-M blank = 114 (setup = 0), 1 IRE = 2.857; if setup = 1, blank = 112, 1 IRE = 2.8. Table-7 White Black Blank Sync s-video Y NTSC/PAL-M 525, setup = 0 DAC data 400 136 114 0 Description Sync interval 0 0 0 1 W mA V 26.68 1.000 400 Y 370 C 100 IRE PL QD 321 291 245 215 166 136 114 blank level sync level page 13 of 23 9.07 7.6 0.34 0.285 7.5 IRE 40 IRE 0.00 0.00 W: white Y: yellow C: cyan G: green M: magenta R: red B: blue Figure-11 Color bars, s-video Y NTSC/PAL-M 525, setup=0 video output waveform 3U HOL U\ G M R B Century Semiconductor Inc. Table-8 White Black Blank Sync CS8552 s-video Y PAL-BDGHINc 625 DAC data 400 120 120 0 Description Sync interval 0 0 0 1 Typical with 37.5 load, vref_o = vref_i, SETUP = 0 100% saturation (100/0/100/0) color bars. W mA V 26.68 1.000 400 Y 368 C G M R B 319 QD 236 204 PL HOL 8.0 0.30 0.00 0.00 W: white Y: yellow C: cyan G: green M: magenta R: red B: blue 3U Figure-12 color bars, s-video Y PAL-BDGHINc 625 video output waveform U\ 284 152 120 black/blank level sync level page 14 of 23 Century Semiconductor Inc. Table-9 s-video Chrominance NTSC/PAL-M 525 Typical with 37.5 load, vref_o = vref_i, SETUP = 0 100% saturation color bars. CS8552 Description Peak C (high) Burst (high) Blank Burst (low) Peak C (low) DAC data 423 313 256 199 89 Sync interval No No No No No mA V 28.21 1.058 20.88 0.783 17.07 0.64 13.27 0.498 QD PL color-burst 5.93 Figure-13 color bars, s-video Chrominance NTSC/PAL-M 525 video output waveform 3U HOL 0.222 U\ blank level page 15 of 23 Century Semiconductor Inc. Table-10 s-video Chrominance PAL-BDGNICc 625 Typical with 37.5 load, vref_o = vref_i, SETUP = 0 100% saturation (100/0/100/0) color bars. CS8552 Description Peak C (high) Burst (high) Blank Burst (low) Peak C (low) 433 316 256 196 79 DAC data No No No No No Sync interval mA V 28.88 1.083 21.08 0.791 17.07 0.64 13.07 0.490 QD PL color-burst 5.27 0.198 Figure-14 color bars, s-video Chrominance PAL-BDGNICc video output waveform 3U HOL U\ blank level page 16 of 23 Century Semiconductor Inc. Table-11 composite NTSC/PAL 525 Typical with 37.5 load, vref_o = vref_i, SETUP = 0 100% saturation color bars. CS8552 Description Peak C (high) White Burst (high) Black Blank Burst (low) Peak C (low) Sync DAC data 488 400 171 136 114 57 48 0 Sync interval 0 0 0 0 0 0 0 1 mA V 32.55 1.221 26.68 1.000 100 IRE PL 7.5 IRE QD 400 370 321 291 245 215 166 136 114 blank level 40 IRE 11.41 0.423 9.07 0.34 7.6 0.285 3.8 0.00 0.143 0.00 3U HOL 20 IRE 20 IRE U\ sync level page 17 of 23 Figure-15 colors, composite NTSC/PAL 525 video output waveform Century Semiconductor Inc. Table-12 composite PAL-BDGHINc 625 Typical with 37.5 load, vref_o = vref_i, SETUP = 0 100% saturation (100/0/100/0) color bars. CS8552 Description Peak C (high) White Burst (high) Black Blank Burst (low) Peak C (low) Sync DAC data 488 400 171 136 114 57 48 0 Sync interval 0 0 0 0 0 0 0 1 mA V 32.88 1.233 26.68 1.000 PL 319 HOL QD 400 368 284 236 204 152 120 black/blank level sync level Figure-16 Colors, composite PAL-BDGHINc 625 video output waveform page 18 of 23 12.01 0.45 8.0 4.0 1.8 0.00 0.30 0.15 0.068 0.00 3U U\ Century Semiconductor Inc. RECOMMENDED OPERATING CONDITIONS Symbol VAA TA RL VREF_IN Power Supply Ambient Operating Temperature DAC Output Load External Voltage Reference Nominal REST 1.11 Parameter Min 3.0 0 Typ 3.3 37.5 1.23 850 Max 3.6 70 -1.35 CS8552 Unit V C V ABSOLUTE MAXIMUM RATINGS VAA TA Power Supply (Measured to ground) Ambient Operating Temperature Voltage on Any Signal Pin U\ ---55 -GND-0.3 -65 Symbol Parameter Min Typ Max 5 125 Unit V C V C C TS TJ Storage Temperature Junction Temperature QD VAA+0.3 +150 +150 3U HOL page 19 of 23 PL Century Semiconductor Inc. DC CHARACTERISTICS CS8552 (Recommended operating conditions using external voltage reference with RSET = 850, VREFIN = 1.23V, NTSC CCIR601 operation and clock frequency = 27MHz at 25C, +3.3V) Symbol IAA Parameter VAA Supply Current Video D/A Resolution INL DNL Integral Nonlinearity Differential Nonlinearity Maximum Output Current VOC Output Compliance Video level Error Full-Scale DAC Output Digital Inputs VIH VIL IIH IIL Input High Voltage Input Low Voltage Input High current (Vin=2.4V) Input Low current (Vin=0.4V) Digital Outputs VOH VOL IOZ VREF_IN 0 9 9 Min Typ Max 105 9 1 1 35 1.5 5 Unit mA Bits LSB LSB mA V % IRE U\ 182.5 QD GND-0.3 2.4 10 1.23 10 1.11 2.0 VAA+0.3 0.8 1 -1 V V A A PL Output High Voltage (IOH=-400A) Output Low Voltage (IOL=3.2mA) Three-State Current V 0.4 50 V A A 1.35 V A VREF_OUT VREF_OUT Output Voltage IREF_OUT VREF_OUT current 3U HOL VREF_IN Input Current page 20 of 23 Century Semiconductor Inc. AC CHARACTERISTICS CS8552 (Recommended operating conditions using external voltage reference with RSET = 850, VREFIN = 1.23V, NTSC CCIR601 operation and clock frequency = 27MHz at 25C, +3.3V) Symbol Parameter Luminance Bandwidth Chrominance Bandwidth Differential Gain Differential Phase SNR Hue Accuracy Color Saturation Accuracy 4 Analog Output Delay Analog Output Rise Time Analog Output Setting Time 1 2 3 Fck Pixel/Control Setup Time Pixel/Control Hold Time Control Output Delay Time CLOCK Frequency Min Typ Fck/4 1.3 1 1 60 1.5 3 3 Max Unit MHz MHz % dB % ns ns ns ns ns ns 29.5 MHz ns ns QD 1 3 24.54 10 10 CLOCK Pulse Width Low Time CLOCK Pulse Width High Time 3U HOL page 21 of 23 PL U\ 30 3 30 15 27 1.5 Century Semiconductor Inc. Video Input and Output Timing CS8552 CLOCK P[7:0] HSYNCN, VSYNCN (slave mode) HSYNCN, VSYNCN (master mode) 3 4 pixel 1 pixel 0 1 2 pixel 0 pixel 1 Analog output Figure-17 Video Input and Output Timing 3U HOL page 22 of 23 PL QD U\ Century Semiconductor Inc. PACKAGE OUTLINE (32-pin PLCC) D D1 4 1 32 30 CS8552 A3 5 PIN 1 IDENTIFIER 29 E2 E1 E 13 21 14 20 A1 e D2 HOL Dimensions in Millimeters NOM 2.79 REF 2.29 12.45 11.43 5.21 REF 14.99 13.97 6.48 REF 1.27 REF - MIN 0.50 0.20 1.91 0.40 0.66 12.32 11.35 14.86 13.89 0 10 PL b b1 D2 Symbol A A1 A2 A3 A4 b b1 D D1 D2 E E1 E2 e QD A2 A 3U MAX 3.56 - U\ A4 E2 Dimensions in Inches MIN 0.020 0.008 0.075 0.016 0.026 0.485 0.447 0.585 0.547 NOM 0.110 REF 0.090 0.490 0.450 0.205 REF 0.590 0.550 0.255 REF 0.050 REF - MAX 0.14 0.014 0.095 0.021 0.032 0.495 0.453 0.595 0.553 0.35 2.41 0.53 0.81 12.57 11.51 15.11 14.05 0 10 page 23 of 23 |
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